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17 package org.apache.commons.compress.harmony.unpack200;
18
19 import static org.junit.jupiter.api.Assertions.assertEquals;
20
21 import java.util.stream.Stream;
22
23 import org.junit.jupiter.api.Test;
24 import org.junit.jupiter.params.ParameterizedTest;
25 import org.junit.jupiter.params.provider.Arguments;
26 import org.junit.jupiter.params.provider.MethodSource;
27
28 public class SegmentUtilsTest {
29
30 private static final class MultipleMatches implements IMatcher {
31
32 private final int divisor;
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34 MultipleMatches(final int divisor) {
35 this.divisor = divisor;
36 }
37
38 @Override
39 public boolean matches(final long value) {
40 return value % divisor == 0;
41 }
42
43 }
44
45 public static final IMatcher even = new MultipleMatches(2);
46 public static final IMatcher five = new MultipleMatches(5);
47
48 static Stream<Arguments> countArgs() {
49 return Stream.of(Arguments.of("()V", 0), Arguments.of("(D)V", 1), Arguments.of("([D)V", 1), Arguments.of("([[D)V", 1), Arguments.of("(DD)V", 2),
50 Arguments.of("(DDD)V", 3), Arguments.of("(Lblah/blah;D)V", 2), Arguments.of("(Lblah/blah;DLbLah;)V", 3));
51 }
52
53 static Stream<Arguments> countInvokeInterfaceArgs() {
54 return Stream.of(Arguments.of("(Z)V", 1), Arguments.of("(D)V", 2), Arguments.of("(J)V", 2), Arguments.of("([D)V", 1), Arguments.of("([[D)V", 1),
55 Arguments.of("(DD)V", 4), Arguments.of("(Lblah/blah;D)V", 3), Arguments.of("(Lblah/blah;DLbLah;)V", 4),
56 Arguments.of("([Lblah/blah;DLbLah;)V", 4));
57 }
58
59 @ParameterizedTest
60 @MethodSource("countArgs")
61 public void testCountArgs(final String descriptor, final int expectedArgsCount) {
62 assertEquals(expectedArgsCount, SegmentUtils.countArgs(descriptor));
63 }
64
65 @ParameterizedTest
66 @MethodSource("countInvokeInterfaceArgs")
67 public void testCountInvokeInterfaceArgs(final String descriptor, final int expectedCountInvokeInterfaceArgs) {
68 assertEquals(expectedCountInvokeInterfaceArgs, SegmentUtils.countInvokeInterfaceArgs(descriptor));
69 }
70
71 @Test
72 public void testMatches() {
73 final long[] oneToTen = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
74 assertEquals(6, SegmentUtils.countMatches(new long[][] { oneToTen, new long[] { 5, 6, 7 } }, even));
75 assertEquals(5, SegmentUtils.countMatches(new long[][] { oneToTen }, even));
76 assertEquals(5, SegmentUtils.countMatches(oneToTen, even));
77 assertEquals(3, SegmentUtils.countMatches(new long[][] { oneToTen, new long[] { 5, 6, 7 } }, five));
78 assertEquals(2, SegmentUtils.countMatches(new long[][] { oneToTen }, five));
79 assertEquals(2, SegmentUtils.countMatches(oneToTen, five));
80 }
81 }